The U.S. Embassy in Warsaw, Poland, seeks a contractor to replace a failing flat roof system at the Deputy Chief of Mission Residence, a historic property. The existing modified bitumen roof has drainage, flashing, and waterproofing deficiencies causing leaks. All work must preserve the building's architectural character and comply with local regulations. No specific budget amount or performance timeline is mentioned. The location for performance is the Deputy Chief of Mission Residence in Warsaw, Poland.